The Colorado LEAP project is a longitudinal cohort study utilizing a controlled quasi-experimental design in 5 rural Colorado communities. Two communities serve as intervention communities with the other 3 as matched controls. Intervention sites receive The Food Friends® nutrition and physical activity programs in preschool and 'booster' programming in kindergarten and 1st grade. Assessments are administered 4 times - twice in preschool (Fall and Spring) and once in both kindergarten and 1st grade (Spring). Observational measures with children are conducted at the school; parent/home measures are sent home and returned to school via the child; and school personnel complete school environment and policy assessments.